Mobile emergency sewage treatment system for rural domestic sewage

Abstract

The invention discloses a movable emergency sewage treatment system for rural domestic sewage, which comprises a container main body, the container main body comprises a pretreatment unit, a treatment unit, a magnetic coagulation sedimentation unit and an equipment room; the pretreatment unit comprises a filter; the filter is positioned at the water inlet of the container main body; the treatment unit comprises a treatment pond, and the treatment pond comprises an aerobic zone and an anoxic zone. Efficient filtration and treatment can be realized, and the cost is reduced through a reasonable sludge treatment process and magnetic powder recovery; the inclined plate cleaning mechanism is innovatively designed, and the cleaning effect is enhanced; the dosing amount and the aeration amount of the medicament can be adjusted in real time according to the water quality through the controller, the automation degree is high, and an efficient, flexible and economical solution is provided for emergency treatment of rural domestic sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a mobile emergency sewage treatment system for rural domestic sewage. Background Art

[0002] With the improvement of rural living standards, the discharge of domestic sewage is increasing. Due to the relatively scattered geographical distribution in rural areas, the construction of sewage treatment infrastructure is relatively weak, and there are some seasonal or temporary changes in sewage discharge, such as large fluctuations in sewage volume and water quality during rural markets and holiday tourism peaks. Traditional fixed sewage treatment facilities are difficult to meet these emergency needs. On the one hand, the construction period is long, the cost is high, and the area is large. On the other hand, they cannot be flexibly deployed to different emergency locations. It is difficult to respond quickly and effectively treat sewage, which easily leads to direct discharge of sewage and pollutes the surrounding water environment in rural areas. Some existing mobile sewage treatment equipment has deficiencies in process targeting, mobility convenience, and adaptability to the characteristics of rural domestic sewage, and it is difficult to meet the complex emergency sewage treatment requirements in rural areas. Therefore, it is necessary to develop an efficient equipment specifically for emergency treatment of rural domestic sewage. Summary of the invention

[0003] In order to solve the problems mentioned in the above background technology, the present invention provides a mobile emergency sewage treatment system for rural domestic sewage.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A mobile emergency sewage treatment system for rural domestic sewage, comprising a container body, wherein the container body comprises a pretreatment unit, a treatment unit, a magnetic coagulation sedimentation unit and an equipment room;

[0006] The pretreatment unit includes a filter, and the filter is located at the water inlet of the container body;

[0007] The treatment unit comprises a treatment tank, and the treatment tank comprises an aerobic zone and an anoxic zone.

[0008] The magnetic coagulation sedimentation unit comprises a primary mixing zone, a secondary mixing zone, a coagulation reaction tank and an inclined plate sedimentation tank.

[0009] Preferably, the equipment room is provided with a magnetic recovery machine, a residual sludge pump, a return sludge pump, a dosing device, a blower, a power distribution cabinet and a generator.

[0010] Preferably, the dosing device comprises a coagulant aid preparation machine and a coagulant storage tank, and the coagulant aid preparation machine and the coagulant storage tank are connected to the primary mixing zone.

[0011] Preferably, the sludge inlet ends of the excess sludge pump and the return sludge pump are connected to the bottom of the inclined plate sedimentation tank, and the sludge outlet end of the return sludge pump is connected to the anoxic zone, and an internal reflux pump and a return sludge distribution pipe are installed inside the anoxic zone.

[0012] Preferably, an aeration mechanism is provided in the aerobic zone, and the aeration mechanism includes an aeration pipe, the aeration pipe is connected to a blower, the aeration pipe forms a mesh structure, and a plurality of exhaust ports are evenly distributed on the aeration pipe.

[0013] Preferably, the volumes of the primary mixing zone, the secondary mixing zone and the coagulation reaction tank increase sequentially, and agitators are provided in the primary mixing zone, the secondary mixing zone and the coagulation reaction tank. A sludge storage tank is provided directly below the primary mixing zone, the secondary mixing zone and the coagulation reaction tank, and the sludge outlet end of the residual sludge pump is connected to the sludge storage tank.

[0014] Preferably, a sludge hopper is provided at the bottom end of the inclined plate sedimentation tank, and a sludge scraping device is provided at the bottom end of the inclined plate sedimentation tank to scrape the sludge into the sludge hopper.

[0015] Preferably, an inclined plate mechanism and an inclined plate cleaning mechanism are provided inside the inclined plate sedimentation tank, and the inclined plate mechanism comprises a plurality of inclined plates arranged parallel to each other, and the inclined plates are rotatably installed inside the inclined plate sedimentation tank.

[0016] Preferably, when the inclined plate is in working state, the inclination angle is sixty degrees, one end of the supporting shaft of the inclined plate extends into the driving box on the outer wall of the inclined plate sedimentation tank and is fixed with a gear, a horizontal movable bracket is installed in the driving box through a first slide rail for horizontal sliding, a horizontal rack is fixed on the horizontal movable bracket, multiple gears are engaged with the horizontal rack, and the horizontal movable bracket is driven to move horizontally by a push rod motor.

[0017] Preferably, the inclined plate cleaning mechanism comprises a scraper, a lifting bracket and a cleaning liquid delivery pipe, the scraper is rotatably mounted on the support frame, telescopic sleeves are fixed at both ends of the support frame, the installation shaft of the scraper extends into the telescopic sleeve and is fixed with a spiral column, the outer movable sleeve of the spiral column is provided with a guide ring, the guide ring is fixed to the movable part of the telescopic sleeve, a connecting column is fixed at one end of the movable part of the telescopic sleeve away from the support frame, a limiting column is fixed on the connecting column, special-shaped guide rails are provided on the inner walls of both sides of the inclined plate sedimentation tank, the connecting column is clamped on the special-shaped guide rails, the lifting bracket is mounted on a vertically arranged second slide rail, and is driven to rise and fall by a driving device, the cleaning liquid delivery pipe is fixed on the lifting bracket, and a plurality of first branches are fixed below the cleaning liquid delivery pipe, the bottom end of the first branch is fixedly connected to the support frame, and the bottom end of the first branch is fixedly connected to the second branch, the second branch is arranged parallel to the scraper, and a plurality of cleaning liquid nozzles are equidistantly distributed on the second branch.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Convenience of mobility: It is modified with standard container size, with a strong and corrosion-resistant shell, adjustable support feet at the bottom and a lifting device at the top. It can adapt to various harsh climates and complex terrains in rural areas, and can be flexibly transferred to emergency treatment sites through lifting, quickly responding to the sewage emergency treatment needs in different rural areas, solving the problem that traditional fixed facilities cannot be flexibly deployed.

[0020] 2. Efficient pretreatment: The filter at the water inlet is composed of coarse and fine grids, which can effectively intercept solid debris of different sizes in the sewage, prevent it from entering the subsequent treatment links and causing blockage, and ensure the stable operation of the entire treatment system.

[0021] 3. Perfect treatment process: The aerobic and anoxic zones of the treatment pool cooperate with each other. The aerobic zone provides a suitable environment for microorganisms through aeration mechanisms, effectively decomposing organic matter and nitrifying ammonia nitrogen; the anoxic zone uses anaerobic microorganisms to carry out denitrification and remove some organic matter. At the same time, different biological fillers filled in the two zones provide microorganisms with attachment and growth carriers to improve treatment efficiency.

[0022] 4. High efficiency of magnetic coagulation sedimentation: In the magnetic coagulation sedimentation unit, the volumes of the primary mixing zone, the secondary mixing zone and the coagulation reaction tank increase in sequence, and are all equipped with agitators, and the dosing device is used to accurately add the agent, so that the sewage and the agent react fully to form magnetic flocs. The inclined plate sedimentation tank can switch between vertical and inclined states through a specially designed inclined plate mechanism, which accelerates mud discharge and improves sedimentation efficiency. Compared with the traditional fixed inclined plate, the mud discharge effect is better.

[0023] 5. Innovation in inclined plate cleaning: Driven by the lifting bracket, the scraper of the inclined plate cleaning mechanism can match the position of the inclined plate and actively scrape off the residual sludge on the inclined plate. At the same time, the cleaning liquid delivery pipe and the nozzle cooperate to flush during the scraping process to improve the cleaning efficiency. In addition, during the lifting process, the scraper can switch between vertical and horizontal states through the cooperation of telescopic sleeves, spiral columns and other structures, which not only reduces the obstruction of water flow, but also prevents the cleaning liquid nozzle from being blocked and corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a cross-sectional view from a top view of the present invention;

[0026] Figure 2 It is a cross-sectional view from the main perspective of the present invention;

[0027] Figure 3 It is a schematic diagram of the aeration mechanism of the present invention;

[0028] Figure 4 This is a first-view stereoscopic diagram of the magnetic coagulation precipitation unit of the present invention;

[0029] Figure 5 This is a stereoscopic view of the magnetic coagulation and precipitation unit of the present invention from a second viewing angle;

[0030] Figure 6 It is a three-dimensional cross-sectional view of the magnetic coagulation precipitation unit of the present invention;

[0031] Figure 7 It is a cross-sectional view from the left side of the magnetic coagulation precipitation unit of the present invention;

[0032] Figure 8 This is a schematic diagram of the installation position of the driving box of the magnetic coagulation sedimentation unit of the present invention;

[0033] Fig. 9 This is a schematic diagram of the magnetic coagulation and sedimentation unit of the present invention without the drive box;

[0034] Fig.10 for Fig. 9 A zoomed-in detail of position A in the middle;

[0035] Fig.11 It is an overall enlarged detail view of the inclined plate cleaning mechanism of the present invention;

[0036] Fig.12 An enlarged detail view of a single set of scrapers and support frames in the inclined plate cleaning mechanism of the present invention;

[0037] Fig.13 for Fig.12 Enlarged detail of position B in the middle;

[0038] Fig.14 It is a cross-sectional view of the telescopic sleeve of the present invention;

[0039] Fig.15 It is a schematic diagram of the structure when the scraper in the inclined plate cleaning mechanism of the present invention is in a horizontal state;

[0040] In the figure: 1. Treatment tank; 101. Aerobic zone; 1011. Aeration pipe; 1012. Exhaust port; 1013. First biological filler; 102. Anoxic zone; 1021. Internal return pump; 1022. Return sludge distribution pipe; 1023. Second biological filler; 2. Equipment room; 201. Magnetic recovery machine; 202. Residual sludge pump; 203. Return sludge pump; 204. Coagulant preparation machine; 205. Blower; 206. Power distribution cabinet; 207. Generator; 208. Coagulant storage tank; 3. Magnetic coagulation sedimentation unit; 301. Primary mixing zone; 302. Secondary mixing zone; 303. Coagulation reaction tank; 304. Inclined plate sedimentation tank; 3041. Sludge bucket; 305, sludge storage box; 4, inclined plate mechanism; 401, inclined plate; 402, drive box; 403, gear; 404, first slide rail; 405, horizontal moving bracket; 4051, horizontal rack; 406, push rod motor; 5, inclined plate cleaning mechanism; 501, scraper; 5011, spiral column; 502, support frame; 5021, telescopic sleeve; 5022, guide ring; 5023, connecting column; 5024, limit column; 5025, special-shaped guide rail; 6, second slide rail; 601, lifting bracket; 602, cleaning liquid delivery pipe; 603, first branch; 503, second branch; 5031, cleaning liquid nozzle; 6, second slide rail. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1

[0043] Reference Figure 1-15 , a mobile emergency sewage treatment system for rural domestic sewage, including a container body, the container body including a pretreatment unit, a treatment unit, a magnetic coagulation sedimentation unit 3 and an equipment room 2;

[0044] The main body of the container is a modified equipment body made from the standard container size. The outer shell of the container is made of high-strength corrosion-resistant steel, which has good sealing and firmness and can adapt to various harsh weather conditions outdoors in rural areas. The four corners of the bottom of the container are equipped with support feet that can handle height, which is convenient for placing and leveling the equipment on different terrains. There is a lifting device on the top, which is convenient for the use of cranes and other equipment to lift and transfer the entire device, so that it can be flexibly moved to the emergency treatment site by lifting in narrow rural roads or areas without traffic;

[0045] The pretreatment unit includes a filter, which is located at the water inlet of the container body. It consists of a coarse grid and a fine grid, with a bar spacing of 15-25mm. It is made of stainless steel and is used to intercept large solid debris in sewage, such as branches, stones, large pieces of plastic, etc. The fine grid is set after the coarse grid, with a bar spacing of 5-10mm, to further remove smaller particles of suspended matter and prevent them from entering the subsequent treatment links and causing blockage;

[0046] The treatment unit comprises a treatment pool 1 , and the treatment pool 1 comprises an aerobic zone 101 and an anoxic zone 102 .

[0047] The volume of aerobic zone 101 is 5-10m 3 The interior is filled with a first biological filler 1013, and the high-efficiency biological filler 1013 is a composite filler made of polyethylene or polypropylene, with a filling rate of 40%-60%, providing a large amount of attachment and growth surface for aerobic microorganisms;

[0048] The volume of the hypoxic zone 102 is 3-6m 3 , a special flow guide structure such as baffles is arranged inside, so that the sewage forms a slow circulation in the area, increasing the contact time and reaction efficiency between the sewage and the sludge. The anoxic area is filled with a certain amount of second biological filler 1023, which is a soft fiber filler, providing a carrier for the attachment and growth of anaerobic microorganisms. In anoxic environment, anaerobic microorganisms are used to convert nitrate nitrogen in sewage into nitrogen gas for discharge, while removing some organic matter, thereby stabilizing the activated sludge flocs.

[0049] The magnetic coagulation sedimentation unit 3 includes a primary mixing zone 301 , a secondary mixing zone 302 , a coagulation reaction tank 303 and an inclined plate sedimentation tank 304 .

[0050] Among them, the equipment room 2 is equipped with a magnetic recovery machine 201, a residual sludge pump 202, a return sludge pump 203, a dosing device, a blower 205, a power distribution cabinet 206 and a generator 207;

[0051] The magnetic recovery machine 201 is located near the bottom of the inclined plate sedimentation tank 304 and is used to recover magnetic powder in the sedimentation sludge. The magnetic separation technology is used to separate the magnetic powder from the sludge through the magnetic field. The recovered magnetic powder can be recycled to reduce the processing cost. The recovery efficiency of the magnetic recovery machine 201 can reach more than 90%, and the operation is simple and convenient. The magnetic powder recovery operation can be performed regularly to reduce the loss of magnetic powder.

[0052] Wherein, the dosing device includes a coagulant preparation machine 204 and a coagulant storage tank 208, and the coagulant preparation machine 204 and the coagulant storage tank 208 are connected to the primary mixing zone 301, and the dosing device also includes a magnetic powder adding medicine box, in which high-purity magnetic powder is stored, and the magnetic powder is added to the primary mixing zone 301 at the front end of the magnetic coagulation sedimentation unit 3 by a precise metering pump according to the sewage flow and water quality, with a dosage of 20-50 mg / L, the dosage of polyaluminium chloride (PAC) is 50-100 mg / L, and the dosage of coagulant anionic polyacrylamide (PAM) is 1-3 mg / L. The three agents are respectively transported to the primary mixing zone 301 through independent corrosion-resistant pipelines and high-precision metering pumps, and are equipped with a static mixer to ensure that the agents are fully and quickly mixed with the sewage. The dosing device is connected to the control system in the equipment room, and the dosage of the agents can be automatically adjusted according to the preset program and the real-time monitored water quality data.

[0053] Among them, the sludge inlet ends of the residual sludge pump 202 and the return sludge pump 203 are connected to the bottom of the inclined plate sedimentation tank 304, and the sludge outlet end of the return sludge pump 203 is connected to the anoxic zone 102. An internal reflux pump 1021 and a return sludge distribution pipe 1022 are installed inside the anoxic zone 102. The reflux ratio can be adjusted between 30% and 80%. Part of the precipitated sludge is returned to the anoxic zone 102 to provide sufficient microbial flora for the denitrification reaction.

[0054] Among them, an aeration mechanism is provided in the aerobic zone 101, and the aeration mechanism includes an aeration pipe 1011, which is connected to the blower 205. The aeration pipe 1011 forms a mesh structure, and a plurality of exhaust ports 1012 are evenly distributed on the aeration pipe 1011. The aeration volume can be automatically adjusted according to the dissolved oxygen concentration in the pool to maintain the dissolved oxygen content at 2-4 mg / L, ensuring the efficient decomposition of organic matter in the sewage by aerobic microorganisms and the nitrification reaction of ammonia nitrogen. A partition is provided between the aerobic zone 101 and the anoxic zone 102, and a water hole with adjustable flow is provided at the bottom of the partition to control the residence time of the sewage in the aerobic zone to be 6-12 hours. The aerobic zone is also provided with a pH monitoring sensor and a temperature sensor to monitor the water quality conditions in real time so as to adjust the operating parameters in time.

[0055] The volumes of the primary mixing zone 301, the secondary mixing zone 302 and the coagulation reaction tank 303 increase in sequence, and agitators are provided in the primary mixing zone 301, the secondary mixing zone 302 and the coagulation reaction tank 303. A sludge storage tank 305 is provided directly below the primary mixing zone 301, the secondary mixing zone 302 and the coagulation reaction tank 303. The sludge outlet end of the residual sludge pump 202 is connected to the sludge storage tank 305, and the residual part can be regularly discharged for subsequent treatment, such as sludge dehydration, etc.

[0056] The effective volume of the coagulation reaction tank 303 is 2-4m 3, using a combination of mechanical stirring and hydraulic stirring. The mechanical stirring device includes a high-speed stirrer and a medium-speed stirrer. The high-speed stirrer runs at a speed of 100-150rpm at the initial stage of adding the reagent, so that the reagent and sewage are quickly mixed and uniformly formed and initially form tiny flocs; the medium-speed stirrer then runs at a speed of 30-60rpm to promote the further growth of the flocs and combine with the magnetic powder to form magnetic flocs. The hydraulic retention time of the coagulation reaction tank 303 is 10-20 minutes. Through the reasonably designed water flow channel and baffle, the sewage forms a good flow state in the reaction tank to ensure that the reaction is fully carried out.

[0057] A sludge hopper 3041 is provided at the bottom end of the inclined plate sedimentation tank 304 , and a sludge scraping device is provided at the bottom end of the inclined plate sedimentation tank 304 to scrape the sludge into the sludge hopper 3041 .

[0058] The inclined plate sedimentation tank 304 is provided with an inclined plate mechanism 4 and an inclined plate cleaning mechanism 5. The inclined plate mechanism 4 includes a plurality of inclined plates 401 arranged parallel to each other. The inclined plates 401 are rotatably mounted inside the inclined plate sedimentation tank 304.

[0059] Inclined plate 401 is made of polypropylene. The magnetic flocs in inclined plate sedimentation tank 304 quickly settle to the bottom of the tank by gravity. The supernatant of inclined plate sedimentation tank 304 can be directly discharged or reused after reaching the standard, such as for farmland irrigation. Inclined plate sedimentation tank 304 is connected to the control system in the equipment room, which can monitor the sedimentation effect and effluent water quality in real time.

[0060] The inclined plate 401 is in working state, with an inclination angle of 60 degrees. One end of the supporting shaft of the inclined plate 401 extends into the driving box 402 on the outer wall of the inclined plate sedimentation tank 304 and is fixed with a gear 403. A horizontal moving bracket 405 is installed in the driving box 402 through a first slide rail 404 for horizontal sliding. A horizontal rack 4051 is fixed on the horizontal moving bracket 405. Multiple gears 403 are all meshed with the horizontal rack 4051, and the horizontal moving bracket 405 is driven to move horizontally by a push rod motor 406.

[0061] By controlling the extension and retraction of the push rod motor 406, the horizontal rack 4051 can be driven to move horizontally, so that the inclined plate 401 can be driven to rotate through the engagement between the horizontal rack 4051 and the gear 403, so that the inclined plate 401 can switch between a vertical state and a sixty-degree inclined state. When the inclined plate 401 is in a vertical state, the sludge deposited on the surface of the inclined plate 401 can be promoted to fall off, thereby accelerating the sludge discharge. Compared with the traditional fixedly installed inclined plate 401, the sludge discharge can be more efficient.

[0062] The inclined plate cleaning mechanism 5 includes a scraper 501, a lifting bracket 601 and a cleaning liquid delivery pipe 602. The scraper 501 is rotatably mounted on the support frame 502. Both ends of the support frame 502 are fixed with telescopic sleeves 5021. The installation shaft of the scraper 501 extends into the telescopic sleeve 5021 and is fixed with a screw column 5011. The outer movable sleeve of the screw column 5011 is provided with a guide ring 5022. The guide ring 5022 is fixed to the movable part of the telescopic sleeve 5021. The movable part of the telescopic sleeve 5021 is away from the support frame 502. The end of the connecting column 5023 is fixed with a limiting column 5024. Special-shaped guide rails 5025 are provided on the inner walls of both sides of the pool 304, and the connecting column 5023 is stuck on the special-shaped guide rails 5025. The lifting bracket 601 is installed on the vertically arranged second slide rail 6, and is driven to rise and fall by the driving device. The cleaning liquid delivery pipe 602 is fixed on the lifting bracket 601, and a plurality of first branches 603 are fixed below the cleaning liquid delivery pipe 602. The bottom end of the first branch 603 is fixedly connected to the support frame 502, and the bottom end of the first branch 603 is fixedly connected to the second branch 503, the second branch 503 is arranged in parallel with the scraper 501, and a plurality of cleaning liquid nozzles 5031 are evenly distributed on the second branch 503;

[0063] The lifting of the lifting bracket 601 can drive the scraper 501 to move up and down. The position of the scraper 501 matches the inclined plate 401 in the vertical state. When the scraper 501 moves up and down, the sludge remaining on the inclined plate 401 can be actively scraped off, and the cleaning liquid can be poured into the cleaning liquid delivery pipe 602. The cleaning liquid is guided by the first branch 603 and the second branch 503 and finally sprayed out from the cleaning liquid nozzle 5031. It can scrape and rinse at the same time, which further improves the cleaning efficiency. When the scraper 501 moves up and down, the limit column 5024 slides in the special-shaped guide rail 5025 to drive the telescopic sleeve 5021 to extend and retract. When the telescopic sleeve 5021 is extended and retracted, it can drive the guide ring 5022 to the outside horizontal of the spiral column 5011 When the scraper 501 moves downward, the telescopic sleeve 5021 gradually extends and drives the scraper 501 to rotate to a horizontal state. The scraper 501 is separated from the cleaning liquid nozzle 5031 and the surface of the inclined plate 401 is scraped clean.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mobile emergency sewage treatment system for rural domestic sewage, comprising a container body, characterized in that: The container body comprises a pretreatment unit, a treatment unit, a magnetic coagulation and sedimentation unit (3) and an equipment room (2); The pretreatment unit includes a filter, and the filter is located at the water inlet of the container body; The treatment unit comprises a treatment pool (1), wherein the treatment pool (1) comprises an aerobic zone (101) and an anoxic zone (102). The magnetic coagulation sedimentation unit (3) comprises a primary mixing zone (301), a secondary mixing zone (302), a coagulation reaction tank (303) and an inclined plate sedimentation tank (304).

2. A mobile emergency sewage treatment system for rural domestic sewage according to claim 1, characterized in that: The equipment room (2) is provided with a magnetic recovery machine (201), a residual sludge pump (202), a return sludge pump (203), a dosing device, a blower (205), a power distribution cabinet (206) and a generator (207).

3. A mobile emergency sewage treatment system for rural domestic sewage according to claim 2, characterized in that: The dosing device includes a coagulant preparation machine (204) and a coagulant storage tank (208), and the coagulant preparation machine (204) and the coagulant storage tank (208) are connected to the primary mixing zone (301).

4. A mobile emergency sewage treatment system for rural domestic sewage according to claim 2, characterized in that: The sludge inlet ends of the excess sludge pump (202) and the return sludge pump (203) are connected to the bottom of the inclined plate sedimentation tank (304), and the sludge outlet end of the return sludge pump (203) is connected to the anoxic zone (102). An internal return pump (1021) and a return sludge distribution pipe (1022) are installed inside the anoxic zone (102).

5. The mobile emergency sewage treatment system for rural domestic sewage according to claim 2 is characterized by: An aeration mechanism is provided in the aerobic zone (101), and the aeration mechanism comprises an aeration pipe (1011). The aeration pipe (1011) is connected to the blower (205), the aeration pipe (1011) forms a mesh structure, and a plurality of exhaust ports (1012) are evenly distributed on the aeration pipe (1011).

6. A mobile emergency sewage treatment system for rural domestic sewage according to claim 2, characterized in that: The volumes of the primary mixing zone (301), the secondary mixing zone (302) and the coagulation reaction tank (303) increase successively, and agitators are provided in the primary mixing zone (301), the secondary mixing zone (302) and the coagulation reaction tank (303). A sludge storage tank (305) is provided directly below the primary mixing zone (301), the secondary mixing zone (302) and the coagulation reaction tank (303), and the sludge outlet end of the residual sludge pump (202) is connected to the sludge storage tank (305).

7. The mobile emergency sewage treatment system for rural domestic sewage according to claim 1 is characterized by: A sludge hopper (3041) is provided at the bottom end of the inclined plate sedimentation tank (304), and a sludge scraping device is provided at the bottom end of the inclined plate sedimentation tank (304) to scrape the sludge into the sludge hopper (3041).

8. The mobile emergency sewage treatment system for rural domestic sewage according to claim 1 is characterized by: An inclined plate mechanism (4) and an inclined plate cleaning mechanism (5) are provided inside the inclined plate sedimentation tank (304). The inclined plate mechanism (4) comprises a plurality of inclined plates (401) arranged parallel to each other. The inclined plates (401) are rotatably mounted inside the inclined plate sedimentation tank (304).

9. A mobile emergency sewage treatment system for rural domestic sewage according to claim 8, characterized in that: When the inclined plate (401) is in working condition, the inclined angle is sixty degrees. One end of the supporting shaft of the inclined plate (401) extends into a driving box (402) on the outer wall of the inclined plate sedimentation tank (304) and is fixed with a gear (403). A horizontal movable bracket (405) is installed in the driving box (402) through a first slide rail (404) for horizontal sliding. A horizontal rack (4051) is fixed on the horizontal movable bracket (405). Multiple gears (403) are all meshed with the horizontal rack (4051), and the horizontal movable bracket (405) is driven to move horizontally by a push rod motor (406).

10. A mobile emergency sewage treatment system for rural domestic sewage according to claim 9, characterized in that: The inclined plate cleaning mechanism (5) comprises a scraper (501), a lifting bracket (601) and a cleaning liquid delivery pipe (602); the scraper (501) is rotatably mounted on a support frame (502); telescopic sleeves (5021) are fixed at both ends of the support frame (502); the installation shaft of the scraper (501) extends into the telescopic sleeve (5021) and is fixed with a screw column (5011); the outer movable sleeve of the screw column (5011) is provided with a guide ring (5022); the guide ring (5022) is fixed to the movable part of the telescopic sleeve (5021); a connecting column (5023) is fixed to the end of the movable part of the telescopic sleeve (5021) away from the support frame (502); a limiting column (5024) is fixed to the connecting column (5023); Special-shaped guide rails (5025) are provided on the inner walls of both sides of the sedimentation tank (304), and the connecting column (5023) is clamped on the special-shaped guide rails (5025). The lifting bracket (601) is installed on a second vertically arranged slide rail (6) and is driven to rise and fall by a driving device. The cleaning liquid delivery pipe (602) is fixed on the lifting bracket (601), and a plurality of first branches (603) are fixed below the cleaning liquid delivery pipe (602), the bottom end of the first branch (603) is fixedly connected to the support frame (502), and the bottom end of the first branch (603) is fixedly connected to the second branch (503), the second branch (503) is arranged in parallel with the scraper (501), and a plurality of cleaning liquid nozzles (5031) are evenly distributed on the second branch (503).

Images